Add ReactiveHTML remove script

[philippjfr]

Closes #2519

[codecov]

Codecov Report

Merging #2535 (c0fe370) into master (423c991) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2535      +/-   ##
==========================================
- Coverage   83.23%   83.23%   -0.01%     
==========================================
  Files         184      184              
  Lines       23226    23226              
==========================================
- Hits        19332    19331       -1     
- Misses       3894     3895       +1     

Impacted Files	Coverage Δ
panel/tests/pane/test_plotly.py	98.10% <0.00%> (-0.64%)	⬇️

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